Window stop



A. G. GRASSO WINDOW STOP Filed July 16, 1932 Dec. 19, 1933.

Patented Dec. 19, 1933 UNITED PATENT; omen This invention relates to newand useful improvements inwindow stops, and has for an object to provide a simple and inexpensive device to beattached to a stile of the upper sash of B a window whereby to limit the opening of both,

the upper and lower sashes of the window.

Other objectsand advantages willbe apparent-V from a consideration of the following detailed description taken in connection with the accompanying drawing wherein a satisfactory embodiment of the invention is shown, However,

it will be understood that the invention is not.

limited to the details disclosed but includes all such variations and modifications as fall within the spirit of the invention and the scope of the appended claim. In the drawing: V 1 Fig. 1 is a longitudinal sectional viewthrough the adjoining portions of the upper and lower sashes of a window, my improved stop being shown in place on the upper sash and in operative position; r 1

Fig. 2 is a longitudinal sectional view through the improved stop, the plungerbeing shown in extended .or operative position;

Fig. 3 is an endelevational view of the device; Fig. 4 is a view similar to Fig. 2 the plunger being shown in retracted or inoperative position; Fig. 5 is an elevational view of a portion of an end of the device;

Fig. 6 is a perspective view of a sleeve employed;

Fig. 7 is a side elevational view of the sleeve; and

Fig. 8 is a transverse sectional view taken substantially along the line 8-8 of Fig. 4.

Referring in detail to the drawing, at 10 and 11 are indicated portions of the upper and lower sashes respectively of a window. It will be understood that these sashes are slidable relatively in a frame (not shown) whereby the window is opened and closed. My improved stop generally indicated at 12 is shown as mounted in a stile 13 of the upper sash on the inner side thereof and is preferably mounted a few inches above the lower rail 14. of said sash and is adapted when in operative condition to limit the opening movement of either or both of the upper and lower sashes.

50 *-"I'he stop 12 includes a cylinder 15 open at its forward or outer end and closed at its inner end as by a wall 16 which may as shown be an integral part of the cylinder. Adjacent its closed end the cylinder may be provided with 1 relatively small diameter recess 1'? the purpose of which will later appear. Inserted into the open end of the cylinder 15 is a sleeve'member 18 carryingan attaching or mounting flange 19 having screw holes 20 therein for the passage of mounting screws;

The sleeve 18 has a force fit in the cylinder 15 whereby theparts are assembled cheaply and without the use ofsecuring screws or the like. When the sleeve is assembled with the cylinder the flange 19 is preferably in abutting relation -with the open end of the cylinder as clearly shown in Figs. 2 and 4. A longitudinal passage extends entirely through the sleeve, and at. spaced and preferably diametrically opposite points the sleeve is provided with longitudinally l extending slots 21 opening through'the inner end of the sleeve. At its inner end at one side of each of its slots 21 the sleeve is cut away to provide shoulders 22 the purpose of which will later appear. a

Operating through the sleeve is a bolt 01 plunger 23 at its inner end carrying lateral projections 24. These projections may represent the flattened extending ends of a pin 25 passed through the inner end portion of the-plunger or they may be in the form of nubs integral with the plunger. A coil spring 26 is arranged within the cylinder 15 and has its inner end portion disposed within the relatively small diameter recess 17 and bears against the closed end of the cylinder. The other end of this spring engages the inner end of the plunger and constantly urges the plunger outwardly of the cylinder and sleeve or toward its operative position as shown in Figs. 1 and 2.

The plunger 23 is adapted to be reci'procated in the sleeve and is also turnable therein, and the lateral projections 24 are adapted to be received in the slots 21 in the sleeve while the plunger is in operative position and during its 5 movement to and from operative position. When the plunger is projected or in operative position as shown in Figs. 1 and 2 it may, from the inside of the window, be pressed into the sleeve against the action of the spring 26 to t carry the projections 24 beyond the inner ends of the slots 21 and then, if the plunger is given a. partial turn to shift said projections out 01' registry with the slots, the plunger will be locked in inoperative position since the effort of each side of each slot will serve to limit the turning movement of the plunger when it is being locked in retracted position, and when it is being again shifted for movement to operative position the projections will engage the other extending portions of the sleeve so that the bolt will not inadvertently be givensuch a turn as would carry the projections beyond the slot. When the projectionsengage the slot sides of the extending portions of the sleeve the bolt may be re-' leased and the spring will position.

In its inner end the bolt may be provided with openings 27 for the reception of any suitable tool, such as a wrench with projections to enter these openings. to be used in shifting the bolt against the action of spring 26 and to be used shift. it to operative in turning the bolt. However, if desired the inner end of the bolt may also be knurled or roughened as at 28 whereby it may be engaged by a thumb or finger and suificient friction setup to permit of turning of the plunger. If desired either the'knurling'or the openings may 7. be omitted.

From the foregoing description it is believed that the construction and operation of my improved window stop will be clearly understood. The device comprises but a few parts which may be easily assembled, the plunger being first assembled in the sleeve, the spring being then disposed in the cylinder, and the sleeve and cylinder being then assembled. The lateral projections orpins24 operating in the slots 21 serve 1 to limit the outward movement of the plunger under the influence of thespring and also when disposed on'the shoulders 22 serve to lock the plunger in retracted or inoperative position. The device is easily applied to a window sash since it is but necessary to bore a recess to receive the cylinder and the device may be easily placed in either operative or inoperative position and while in inoperative position will not interfere with movement of the window sashes but while in operative position will act as a positive stopto limit movement of either sash toward open position.

Having thus set forth the nature of my invention, what I claim is: v 7

A sash stop comprising a cylindrical casing open at one'end and closed at the other, a sleeve extending into the open end'of the casing, an attaching plate on the outer end of the sleeve, said casing being adapted for mounting in an opening in a sash with the plate against a wall of the sash for securing the device therein, said sleeve having a longitudinal passage opening through the opposite ends thereof, said sleeve also having a longitudinal slot in its side wall opening through the inner end of the sleeve and closed at its outer end, a cylindrical bolt mounted in said passage-for'both longitudinal sliding and turning movements, said bolt being shiftable between a non-holding position substantially within the sleeve and a holding position with its outer end projecting forwardlyirom said open end of the sleeve, a spring within the casing between the bolt and the closed end of the casing tending to force the bolt to the holding position,

a lateral projection on the bolt adapted to operate in said slot and coact with the closed end whereby it may be turned to shift said-projection to and from alignment with the slot,'said stop shoulder acting to limit turning movement of the bolt in one-direction and the opposite wall of the slot acting to limit its turning movemen in the opposite direction with the projection in alignment with theslot.

. ALEY G. GRASSO. 

